CN205941386U - Automatic evaluation system of slab low power quality class - Google Patents
Automatic evaluation system of slab low power quality class Download PDFInfo
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- CN205941386U CN205941386U CN201620635114.8U CN201620635114U CN205941386U CN 205941386 U CN205941386 U CN 205941386U CN 201620635114 U CN201620635114 U CN 201620635114U CN 205941386 U CN205941386 U CN 205941386U
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Abstract
The utility model provides an automatic evaluation system of slab low power quality class, package rubbing board base conveyor, photographic means and aassessment process control system, slab conveyor includes transport trolley, trolley track and installs the contact switch on the trolley track, photographic means includes camera bracket and camera, and photographic means is located the trolley track top between transport trolley and the contact switch, aassessment process control system includes the computer, shines camera data capture card, transport trolley control PLC, contact switch feedback PLC and camera control PLC with data communication is carried out in the computer link respectively, the utility model discloses the manual work can be replaced completely, the automatic grading to slab inside low power quality class is realized to avoiding artifical and disturbing, that improves the inside low power quality class of slab declares the true rate of established standard, for subsequent production preparation and process optimization lay solid foundation, and can reduce on -the -spot technical staff's intensity of labour by a wide margin, has the very big value of using widely in industry.
Description
Technical field
This utility model is related to a kind of plate blank coarse micro-grain defect rating system, and more particularly, to a kind of plate blank coarse micro-grain credit rating is certainly
Dynamic assessment system.
Background technology
In all multiple slab internal soundness defects, center segregation and center porosity are most commonly seen two kind defects.Logical
Often, to lead to that finish to gauge plate product tensile property does not conform to, low-temperature impact does not conform to, fracture is layered etc. a series of asks for both defects
Topic, thus the mechanical property to product causes serious impact.Slab center is led to produce segregation, the main cause of rarefaction defect
It is：In cooling twice process of setting, because water-spraying control is uneven, column crystal generates irregularly slab, creates " bridging " existing
As molten steel above can not flow down the solidification shrinkage supplementing following molten steel, has obvious shrinkage cavity after making molten steel solidification below bridge
With loose；Below bridge, the solidification shrinkage power of molten steel sucks the liquid of enrichment S, P of branch intergranular around simultaneously, makes center segregation
Substantially increase.
For avoiding the more serious slab of center segregation, rarefaction defect to flow into steel rolling process, usual continuous casting on-the-spot meeting is to phase
Close to pour and carry out macroscopic examination inside secondary slab, casting parameters are adjusted in time according to assay；National macroscopic examination mark
The accurate YB/T 4003-1997 for issuing for 1997《Continuous casting plate slab low multiple quality defect judge picture》, but with domestic each iron and steel
The lifting of enterprise's continuous casting technology level and the demand of high-end product exploitation, existing YB/T 4003-1997 standard can not expire
The needs of each Enterprise product development of foot, at present each enterprise stricter low power is proposed according to the difference of itself STEELMAKING PRODUCTION line
Quality classification standard is although rating scale is different, but conventional macroscopic examination method is basically identical, main inclusion：
（1）Arbitrary extracting currently pours time the second stove molten steel and pours the one block of slab casting out；
（2）Perpendicular to throwing direction flame cutter, the logical wide plate base of a part is cut from selected slab, and will
Slab standing under being cut is cooled down in atmosphere；
（3）When the temperature being cut down slab is down to room temperature, this slab is placed on milling machine, the fire of this slab is cut
Surface carries out machining processes, will cut the whole mill off of metal of at least 20mm depth under surface skin it is ensured that finished surface by fire
Roughness reach 0.4；
（4）With 1:5 ammonium persulfate solution corrodes to the surface of completion of processing；
（5）When a more significantly segregation vestige for black or Lycoperdon polymorphum Vitt in the central area of steel slab surface, with shining
Camera is taken pictures to this segregation vestige；
（6）After completing above-mentioned sequence of operations, field technician can be analyzed to the segregation vestige on photo,
The segregation of this slab, loose grade are drawn according to the low multiple quality rating scale of itself, and then judges the same slab pouring time
Can internal soundness meet the requirement of follow-up rolled products, and decides whether casting parameters are adjusted.
（7）Degree of segregation within slab is divided three classes：A class, B class, C class, the serious journey of its slab internal segregation defects
Spending from light to weight is successively：C class ＜ B class ＜ A class；Porousness within slab is divided into 6 ranks：0.5 grade, 1.0 grades, 1.5
Level, 2.0 grades, 2.5 grades, 3.0 grades, the order of severity of its slab internal defect defect from light to weight is successively：1.0 grades of 0.5 grade of ＜
3.0 grades of 1.5 grades of ＜ of ＜, 2.5 grades of ＜ of 2.0 grades of ＜.Generally, segregation and rarefaction defect are graded simultaneously.Its judgment principle
It is：When the color of segregation vestige is more shallow, segregation vestige is thinner, and segregation vestige is in more that point-like exists and more sparse, then inside slab
Segregation, rarefaction defect slighter；When the color of segregation vestige is deeper, segregation vestige is thicker, and segregation vestige is in and more is in line
Shape exists, then the segregation within slab, rarefaction defect are more serious.But above-mentioned judgement work is all field technician leads to
Cross perusal to complete.
Above-mentioned slab segregation, traditional determination methods of loose grade are the long-term work experiences relying on field technician,
Observe by the naked eye all multicharacteristic informations such as the shape of segregation vestige diverse location speckle, color and size on photo to come
Obtain result of determination；This method is affected larger by the subjective factorss of evaluation person, and evaluation result exists because of different evaluation persons
Larger difference, its accurate rate can only achieve 70% about；For solving the above problems, the processing method at scene mainly strengthens skill
Art training, improves the technical merit of Field Force, and the less people of fixation goes to complete the judgement work of plate blank coarse micro-grain grade as far as possible；
But this processing method has following shortcoming：（1）Because above-mentioned assessment method mostlys come from the work of field technician
Make experience, therefore there is larger difficulty teaching aspect；（2）The work being responsible for plate blank coarse micro-grain rating technique personnel specially can be increased
Make intensity, the accuracy rate of remote-effects plate blank coarse micro-grain grading, and then affect follow-up continuous casting.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of plate blank coarse micro-grain credit rating automatic evaluation system, should
System can replace manually, realizes the automatic measure grading to slab inside low multiple quality grade, thus avoiding Human disturbance, solves the back of the body
Scape technological deficiency.
Solve above-mentioned technical problem technical scheme be：
A kind of plate blank coarse micro-grain credit rating automatic evaluation system, including plate blank conveying device, photographic means and evaluation process
Control system；
Described plate blank conveying device includes transport trolley, trolley track and is installed on the contact switch on trolley track；
Described photographic means includes camera carriage and photographing unit, and photographic means is located between transport trolley and contact switch
Above trolley track；
Described evaluation process control system is included computer, is connected the photographing unit carrying out data communication respectively with computer
Data collecting card, transport trolley control PLC, contact switch feedback PLC and photographing unit control PLC；Wherein, photographing unit respectively with photograph
Camera data capture card is connected with photographing unit control PLC, and transport trolley control PLC is connected with transport trolley, and contact switch feeds back
PLC is connected with contact switch.
A kind of above-mentioned plate blank coarse micro-grain credit rating automatic evaluation system, described photographic means also includes being installed on camera support
2 motors on frame and the conveyer belt being installed on step motor shaft, photographing unit is installed on conveyer belt；When slab conveying
When dolly is contacted with contact switch, slab is located at below photographic means, and camera gun central point is in the projection of slab upper surface
On width of plate slab centrage；
Described evaluation process control system also includes being connected, with computer, step motor control PLC carrying out data communication,
Step motor control PLC is connected with motor simultaneously.
Comprised the steps using the method that this utility model carries out the internal low multiple quality grade automatic evaluation of slab：
Step 1：By transport trolley control PLC control transport trolley, by the good slab in surface milling along trolley track to
Photographic means direction is moved；
Step 2：After transport trolley touches contact switch, transport trolley stops, and now, camera gun central point exists
The projection of slab upper surface is located on width of plate slab centrage；Computer passes through photographing unit control PLC automatic photographing unit；
Step 3：The image of slab upper surface is sent to computer by camera data capture card by photographing unit in real time；
Step 4：Two motors are started by step motor control PLC, makes the conveyer belt on motor start to move
Dynamic, drive photographing unit to move along slab length direction, slab upper surface diverse location is taken pictures；Adopted by camera data
Photo is sent back computer by truck；
Step 5：Computer, according to plug-in, after automatically captured image being analyzed, draws plate blank coarse micro-grain matter
Amount grade；Specifically include following steps：
（1）, computer pass through plug-in, automatically to the pixel in the range of photo upper plate base width centreline both sides 10mm
Point is retained, and deletes other pixels, on the basis of interference factor on eliminating photo, reduces the computing of subsequent calculations machine
Amount, shortens the correlation analysiss time；
（2）, the gray value of automatically derived the retained pixel of computer, then mean squareization place is carried out to related gray value
Reason, eliminates the impact to photo shooting quality for the ambient；
（3）, computer the gray value of all pixels point being retained is normalized, make the phase of all pixels point
Gray value is maintained in the range of 0～1.0；
（4）, computer summation process is carried out to the relative gray values of all pixels point retaining, obtain pixel gray value
Summation；Then by this value, plate blank coarse micro-grain credit rating is evaluated, that is,：
As 0.01a ＜During≤12a, plate blank coarse micro-grain quality grade evaluation is C class 0.5 by computer；
As 12a ＜During≤17a, plate blank coarse micro-grain quality grade evaluation is C class 1.0 by computer；
As 17a ＜During≤25a, plate blank coarse micro-grain quality grade evaluation is C class 1.5 by computer；
As 25a ＜During≤36a, plate blank coarse micro-grain quality grade evaluation is C class 2.0 by computer；
As 36a ＜During≤53a, plate blank coarse micro-grain quality grade evaluation is C class 2.5 by computer；
As 53a ＜During≤78a, plate blank coarse micro-grain quality grade evaluation is C class 3.0 by computer；
As 78a ＜During≤116a, plate blank coarse micro-grain quality grade evaluation is B class 0.5 by computer；
As 116a ＜During≤173a, plate blank coarse micro-grain quality grade evaluation is B class 1.0 by computer；
As 173a ＜During≤258a, plate blank coarse micro-grain quality grade evaluation is B class 1.5 by computer；
As 258a ＜During≤386a, plate blank coarse micro-grain quality grade evaluation is B class 2.0 by computer；
As 386a ＜During≤579a, plate blank coarse micro-grain quality grade evaluation is B class 2.5 by computer；
As 579a ＜During≤867a, plate blank coarse micro-grain quality grade evaluation is B class 3.0 by computer；
As 867a ＜During≤1299a, plate blank coarse micro-grain quality grade evaluation is A class 0.5 by computer；
As 1299a ＜During≤1948a, plate blank coarse micro-grain quality grade evaluation is A class 1.0 by computer；
As 1948a ＜During≤2921a, plate blank coarse micro-grain quality grade evaluation is A class 1.5 by computer；
As 2921 ＜During≤4381a, plate blank coarse micro-grain quality grade evaluation is A class 2.0 by computer；
As 4381a ＜During≤6570a, plate blank coarse micro-grain quality grade evaluation is A class 2.5 by computer；
As 6570a ＜During≤9855a, plate blank coarse micro-grain quality grade evaluation is A class 3.0 by computer.
In formula, a is evaluation correlation coefficient,.
Step 6：Computer, from several captured photos, is automatically picked out the minimum grade being judged and is made
Low multiple quality grade for whole slab.
The beneficial effects of the utility model are：
This utility model can replace manually completely, realizes the automatic measure grading to slab inside low multiple quality grade, thus
Avoid Human disturbance, improve the determination rate of accuracy of the internal low multiple quality grade of slab, and then be follow-up Operational preparation and work
Skill optimizes, and lifting finish to gauge product quality lays a solid foundation, and the labor intensity of field technician can be greatly reduced；
This utility model, for improving slab internal soundness it is ensured that finish to gauge product quality plays vital effect, has significantly
Economic benefit, in industry has great popularizing value.
Brief description
Fig. 1 is plate blank conveying device and photographic means position and structural representation；
Fig. 2 is Process Control System schematic diagram；
In figure is labeled as：Transport trolley 1, slab 2, camera carriage 3, motor 4, conveyer belt 5, photographing unit 6, contact are opened
Close 7, trolley track 8, computer 9, camera data capture card 10, transport trolley control PLC 11, contact switch feedback PLC
12nd, step motor control PLC 13, photographing unit control PLC 14.
Specific embodiment
Fig. 1 and Fig. 2 shows, a kind of this utility model plate blank coarse micro-grain credit rating automatic evaluation system, including slab conveying
Device, photographic means and evaluation process control system；Plate blank conveying device includes transport trolley 1, trolley track 8 and contact switch
7, trolley track 8 is installed on the ground, and transport trolley 1 can be walked along trolley track 8, and contact switch 7 is arranged on trolley track 8
On；Photographic means is located at the top of the trolley track 8 between transport trolley 1 and contact switch 7, including 3,2 steps of camera carriage
Stepper motor 4, conveyer belt 5 and 6,2 motors 4 of photographing unit are arranged on camera carriage 3, and conveyer belt 5 is arranged on 2 stepping electricity
By Motor drive on the motor shaft of machine 4, photographing unit 6 is arranged on conveyer belt 5, when transport trolley 1 is contacted with contact switch 7,
Slab 2 is located at below photographic means, and the optical center point of photographing unit 6 is located in slab 2 width in the projection of slab 2 upper surface
It is ensured that camera shoots the definition of photo on heart line；Evaluation process control system is included computer 9, is connected with computer 9 respectively
Carry out the camera data capture card 10 of data communication, transport trolley control PLC 11, contact switch feedback PLC 12, stepping electricity
Machine control PLC 13 and photographing unit control PLC 14, wherein, photographing unit 6 respectively with camera data capture card 10 and photographing unit control
PLC14 processed is connected, and computer 9 controls photographing unit 6 to carry out the shooting of photo by photographing unit control PLC 14, and photographing unit 6 will shoot
Photo computer 9 is sent to by camera data capture card 10；Transport trolley control PLC 11 is connected with transport trolley 1,
Computer 9 controls the start and stop of transport trolley 1 by transport trolley control PLC 11；Contact switch feedback PLC 12 and contact switch
7 are connected, and when transport trolley 1 and contact switch 7 touching, signal is fed back PLC 12 by contact switch and passes to by contact switch 7
Computer 9, computer 9 feeds back PLC 12 by contact switch and controls transport trolley 1 out of service；Step motor control PLC 13
It is connected with motor 4, computer 9 controls the start and stop of motor 4 by step motor control PLC 13.
Comprised the steps of using the method that this utility model carries out plate blank coarse micro-grain credit rating automatic evaluation：
Step 1：First the good slab in surface milling 2 is placed on transport trolley 1, then control computer 9 is by defeated
Send dolly control PLC 11 to send enabling signal to transport trolley 1, so that transport trolley 1 is moved to photographic means direction；
Step 2：After transport trolley 1 touches contact switch 7, contact switch 7 can feed back PLC 12 by contact switch
Send signal to computer 9, computer 9 sends stop signal to transport trolley control PLC 11 after receiving signal, and conveying is little
Car 1 is out of service；Now, the optical center point of photographing unit 6 is located on slab 2 width centreline in the projection of slab 2 upper surface；
Computer 9 passes through photographing unit control PLC 14 automatic photographing unit 6；
Step 3：The image on slab 2 surface is sent to computer by camera data capture card 10 by photographing unit 6 in real time
9, field technician, according to the quality of image, sends signal by computer 9 to photographing unit control PLC 14, and real-time adjustment is shone
The lens focus of camera 6, make photo keep clear；
Step 4：Send signal using computer 9 to step motor control PLC 13, start two motors 4, make step
Conveyer belt 5 in stepper motor 4 starts to move, and drives photographing unit 6 to move along slab 2 length direction；Field technician is continuous
The steel slab surface captured by observation photographing unit 6 from computer 9；After moving to the position of photo to be shot, technical staff
Send signal using computer 9 to step motor control PLC 13,2 motors 4 out of service, so that photographing unit 6 is steady
It is scheduled on the top of slab 2, then passes through computer 9 to photographing unit control PLC 14 sending signal, control photographing unit 6 to shoot lower plate
The photo of this surface location of base 2, then pass through camera data capture card 10, sent back computer 9；So repeat, to plate
Base 2 surface diverse location is taken pictures, and sends back computer in real time；
Step 5：Computer 9, according to plug-in, after automatically captured photo being analyzed, draws plate blank coarse micro-grain matter
Measure grade, concrete grammar is：
（1）, computer 9 pass through plug-in, automatically to average in the range of photo upper plate base width centreline both sides 10mm
300 × 40 pixels of distribution are retained, and delete other pixels on photo, thus interference factor on eliminating photo
On the basis of, reduce the operand of subsequent calculations machine, shorten the correlation analysiss time；
（2）, the gray value of automatically derived the retained pixel of computer 9, then mean squareization place is carried out to related gray value
Reason, eliminates the impact to photo shooting quality for the ambient；
（3）, computer 9 gray value of all pixels point being retained is normalized, make all pixels point
Relative gray values are maintained in the range of 0～1.0；
（4）, computer 9 summation process is carried out to the relative gray values of all pixels point retaining, obtain pixel gray level
Value summation.Then by this value, the low multiple quality grade of slab 2 is evaluated, that is,：
As 0.01a ＜During≤12a, plate blank coarse micro-grain quality grade evaluation is C class 0.5 by computer；
As 12a ＜During≤17a, plate blank coarse micro-grain quality grade evaluation is C class 1.0 by computer；
As 17a ＜During≤25a, plate blank coarse micro-grain quality grade evaluation is C class 1.5 by computer；
As 25a ＜During≤36a, plate blank coarse micro-grain quality grade evaluation is C class 2.0 by computer；
As 36a ＜During≤53a, plate blank coarse micro-grain quality grade evaluation is C class 2.5 by computer；
As 53a ＜During≤78a, plate blank coarse micro-grain quality grade evaluation is C class 3.0 by computer；
As 78a ＜During≤116a, plate blank coarse micro-grain quality grade evaluation is B class 0.5 by computer；
As 116a ＜During≤173a, plate blank coarse micro-grain quality grade evaluation is B class 1.0 by computer；
As 173a ＜During≤258a, plate blank coarse micro-grain quality grade evaluation is B class 1.5 by computer；
As 258a ＜During≤386a, plate blank coarse micro-grain quality grade evaluation is B class 2.0 by computer；
As 386a ＜During≤579a, plate blank coarse micro-grain quality grade evaluation is B class 2.5 by computer；
As 579a ＜During≤867a, plate blank coarse micro-grain quality grade evaluation is B class 3.0 by computer；
As 867a ＜≤1299a, plate blank coarse micro-grain quality grade evaluation is A class 0.5 by computer；
As 1299a ＜During≤1948a, plate blank coarse micro-grain quality grade evaluation is A class 1.0 by computer；
As 1948a ＜During≤2921a, plate blank coarse micro-grain quality grade evaluation is A class 1.5 by computer；
As 2921 ＜During≤4381a, plate blank coarse micro-grain quality grade evaluation is A class 2.0 by computer；
As 4381a ＜During≤6570a, plate blank coarse micro-grain quality grade evaluation is A class 2.5 by computer；
As 6570a ＜During≤9855a, plate blank coarse micro-grain quality grade evaluation is A class 3.0 by computer.
In formula, a is evaluation correlation coefficient,；
Step 6：Computer 9, from several captured before photos, picks out minimum one being judged automatically
Grade, as the low multiple quality grade of whole slab 2, to instruct the adjustment of casting parameters with this.
Claims (2)
1. a kind of plate blank coarse micro-grain credit rating automatic evaluation system it is characterised in that：It includes plate blank conveying device, photographic means
With evaluation process control system；
Described plate blank conveying device includes transport trolley（1）, trolley track（8）Be installed on trolley track（8）On contact
Switch（7）；
Described photographic means includes camera carriage（3）And photographing unit（6）, photographic means is positioned at transport trolley（1）And contact switch
（7）Between trolley track（8）Top；
Described evaluation process control system includes computer（9）, respectively with computer（9）Connect the photograph carrying out data communication
Machine data collecting card（10）, transport trolley control PLC（11）, contact switch feedback PLC（12）With photographing unit control PLC（14）；
Wherein, photographing unit（6）Respectively with camera data capture card（10）With photographing unit control PLC（14）It is connected, transport trolley controls
PLC（11）With transport trolley（1）It is connected, contact switch feeds back PLC（12）With contact switch（7）It is connected.
2. as claimed in claim 1 a kind of plate blank coarse micro-grain credit rating automatic evaluation system it is characterised in that：Described photograph dress
Put and also include being installed on camera carriage（3）On 2 motors（4）With the conveyer belt being installed on step motor shaft（5）, shine
Camera（6）It is installed on conveyer belt（5）On；Work as transport trolley（1）With contact switch（7）During contact, slab（2）Positioned at photographic means
Lower section, photographing unit（6）Optical center point in slab（2）The projection of upper surface is located at slab（2）On width centreline；
Described evaluation process control system also includes and computer（9）Connect step motor control PLC carrying out data communication
（13）, step motor control PLC（13）Simultaneously with motor（4）Connect.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620635114.8U CN205941386U (en) | 2016-06-24 | 2016-06-24 | Automatic evaluation system of slab low power quality class |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620635114.8U CN205941386U (en) | 2016-06-24 | 2016-06-24 | Automatic evaluation system of slab low power quality class |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404790A (en) * | 2016-06-24 | 2017-02-15 | 邯郸市邯钢集团信达科技有限公司 | A slab low-power quality grade automatic evaluating system and an evaluating method |
| CN107941807A (en) * | 2017-11-10 | 2018-04-20 | 首钢集团有限公司 | A kind of method of continuous casting steel billet central defect quantitative analysis |
| CN114113106A (en) * | 2021-11-12 | 2022-03-01 | 中冶赛迪技术研究中心有限公司 | Method and system for automatically grading low-power structure quality of continuous casting billet |
-
2016
- 2016-06-24 CN CN201620635114.8U patent/CN205941386U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106404790A (en) * | 2016-06-24 | 2017-02-15 | 邯郸市邯钢集团信达科技有限公司 | A slab low-power quality grade automatic evaluating system and an evaluating method |
| CN106404790B (en) * | 2016-06-24 | 2023-06-23 | 邯郸市邯钢集团信达科技有限公司 | Automatic evaluation system and evaluation method for low-power quality grade of slab |
| CN107941807A (en) * | 2017-11-10 | 2018-04-20 | 首钢集团有限公司 | A kind of method of continuous casting steel billet central defect quantitative analysis |
| CN114113106A (en) * | 2021-11-12 | 2022-03-01 | 中冶赛迪技术研究中心有限公司 | Method and system for automatically grading low-power structure quality of continuous casting billet |
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Address after: 056015 Fuxing Road 232, Fuxing District, Hebei, Handan Patentee after: Hegang digital Xinda (Handan) Technology Co.,Ltd. Address before: 056015 Fuxing Road 232, Fuxing District, Hebei, Handan Patentee before: HANDAN HANGANG GROUP XINDA TECHNOLOGY CO.,LTD. |